13. In the case of a hearing which is to be held wholly or partly in public, the Scottish Ministers must, at least 21 days before the date fixed for the holding of the hearing—
(a)publish a copy of the notice mentioned in paragraph 12 in a newspaper circulating in the locality in which the controlled activity is carried on or is to be carried on;
(b)serve a copy of that notice on every person mentioned in paragraph 6 who has made representations to the Scottish Ministers.